The nasal fluid produced by your body is known as mucus, although it has many more colorful names which younger people are especially fond of using. Contrary to popular belief, nasal fluid is not an offensive fluid from the body, and is not something that should be thought of as poorly as it is. In truth, nasal fluiid is one of the body’s most important lines of defense, playing a critical role in the protection against infections and various types of irritants.

What Exactly is Mucus?

Everyone is aware that our noses are used to smell things, but that’s certainly not the only role they play in human health. Their role, which not many people actually consider, is as a protection against inbound irritants, and in this capacity, mucus is one of the most important agents involved in the protection process.

Most people recognize mucus as a runny, nasty-looking substance that often dribbles out of the nose, but in actuality, it’s a very complex substance that works hard to keep sinuses and the interior of the nose moist. There are components of mucus which determine its thickness, elasticity, and stickiness, all of which are important in its role as defender against incoming irritation. Most people produce between one pint and one quart of mucus each and every day.

Nasal fluid works to trap foreign substances and prevent them from reaching the interior respiratory system.

Nasal fluid works to trap foreign substances and prevent them from reaching the interior respiratory system.

What Mucus Does

The primary role of mucus is to trap incoming irritation such as animal dander, pollen, mold, smoke, and bacterial substances. By smoothing the lining of the nose and trapping all these types of foreign substances and debris, they are prevented from reaching the interior respiratory system where a great deal of damage could be done. The vast majority of mucus is simply swallowed, along with all the material that it may have trapped. Whatever those foreign substances were, they become neutralized in the gastrointestinal tract, and are then expelled from the body.

This is the more invisible component of mucus removal, and not the one people commonly associate with the process. The more visible process for mucus removal is blowing your nose into a handkerchief, and this of course removes all unwanted material without the need for having it processed in the interior of the body. However, as stated above, this occurs far less frequently than the swallowing process, where most unwanted debris is managed.

Normal Mucus Content

Most of the time, people don’t really think about mucus or what is contained in it, and this is perfectly normal, because it should be unnoticeable if everything in the body is as it should be. Healthy mucus is colorless and is typically quite watery and thin. In the absence of any disease or infections in the body, the cilia of the nose move very gently in tiny waves to move mucus, along with any trapped materials, toward the back of the throat.

These cilia have been compared to tiny brooms which sweep materials clear of nasal passages to keep the breathing process running smoothly. When sinuses are in a good state of health, they are typically empty, because these cilia are working constantly to remove mucus and trapped materials. The end result of this constant sweeping is that the mucus is ushered toward drainage openings into the nasal cavity, and from there it can either be expelled by blowing the nose, or it will simply be swallowed and processed in the gastrointestinal tract.

Indicators of Mucus Problems

There are several indicators which tell you there’s some kind of problem with mucus, often because it’s associated with an infection. Since mucus is normally clear, if you should observe that it becomes yellow, brown, green, gray, white, or even bloody, this could be a sign of a major infection from bacteria, virus, or fungus particles.

The reason for this color change is that the white blood cells in mucus produce enzymes to repel invaders when they encounter any kind of infectious organism. The enzymes produced by the mucus have a tendency to turn it green, and if that remains in place overnight, it can then change into several other colors as described above.

Another indicator of a problem with mucus is the amount that the body generates. Healthy people will generally have clear-colored mucus, and will not even notice any amounts that are produced by the body, since all the work is carried on in the background. Whenever you begin to cough up significant amounts of mucus, that is a likely indicator of an allergic reaction or some kind of infection.

The thickness of mucus is also a frequent indicator of ill health, because thick mucus can clog the throat and become noticeable as it impacts the voice. Thick mucus inhibits vocal cord movement, and the associated post-nasal drip may cause persistent coughing, as well as changes in taste or in smell.

There may also be a burning sensation in the throat because mucus is dripping down the throat, and since it’s naturally acidic, that can be an irritation to the lining of the throat. That’s why it’s very common for someone to wake up with a sore throat when there’s some kind of infection occurring in the body – mucus drainage, which has occurred during sleep hours, has caused noticeable irritation in the lining of the throat.